AdMob

Compiling code. 0.53
Generating R file. 1.09
Compiling generated Java code. Error
B4A line: 132
Activity.AddView(AdView1, 0dip, 0dip, 320dip, 50dip)
javac 1.6.0_25
src\prog.java:356: cannot access com.google.ads.AdView
class file for com.google.ads.AdView not found
mostCurrent._activity.AddView((android.view.View)(mostCurrent._adview1.getObject()),anywheresoftware.b4a.keywords.Common.DipToCurrent((int)(0)),anywheresoftware.b4a.keywords.Common.DipToCurrent((int)(0)),anywheresoftware.b4a.keywords.Common.DipToCurrent((int)(320)),anywheresoftware.b4a.keywords.Common.DipToCurrent((int)(50)));
^

whats wrong on this line:

AdView1.Initialize("Ad", "xxxxxxxxxxxxx")
Activity.AddView(AdView1, 0dip, 0dip, 320dip, 50dip)
AdView1.LoadAd

where is the error or is the admob lib corrupted with b4a 1.6